Air supply fitting



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Patented Sept. 3, 1940 PATENT OFFICE y AIR SUPPLY FITTING CharlesFrederick Priest, Middlesbrough, England l Application Maren-25, 1939,serial No. 264,271

3 Claims.

This invention relates to burners and air supplyfittings for kilns,furnaces, and the like, particularly to burners and air supply fittingsof the type whichare projected through the wall of the f kiln, furnace,and the like and held in position by some fastening means associatedwith the outside ofthe kiln, furnace, and the like.

vfl'he object of the invention is to provide improvements'in the meansfor securing burners 1.0 and yair supply fittings of the type described.

' vAccording to the present invention a plurality of pairsr of lugsproject outwardlyfrom the eX- ternal--face of the kiln, furnace, o r thelike or of a 'member attached thereto, and bars lare disposed betweensaid pairs of lugs and retained therein by wedges, the bars alsoengaging the burner or air supply fitting when said burner or air supplytting is disposed in the aperture through the wall of the kiln, furnace,or the like.

One form of apparatus constructed in accordance with this invention,adapted for the purpose of securing a burner in the wall of a kiln,furnace, or the like, is illustrated in the accompanying drawing,wherein:

Fig. l is an end elevation.

Fig. 2 is a fragmentary longitudinal sectional elevation, taken on lineII-II of Fig. l; and

Fig. 3 is a fragmentary plan View.

In the drawing, an aperture I through the wall 2 of the kiln, furnace orthe like, hereinafter referred to as the kiln, through which the burner3 is projected, is surrounded at its outer end by an annular ring 4which is rigidly secured to the outer face 5 of the kiln Wall 2 by boltsor the like passed through holes 6. The ring 4 may be provided with aninwardly tapering annular flange '1, adapted to project into theaperture I in the kiln wall, the internal periphery 8 of the annularflange forming a tapered seat for the correspondingly shaped outer end 9of the burner 3 so that when said burner 3 is passed through theaperture I it will seat itself in said seat 8 and make a gas-tight fittherein.

The outer face of the annular ring 4 is prox-I vided with four pairs oflugs I0 which project outwardly therefrom, the lugs being cast orotherwise rigidly secured to the ring 4. The lugs Ill are all paralleland are preferably vertical in end elevation, the lugs forming a pairbeing disposed side by side so as to form a vertical gap I Itherebetween. Each pair of lugs is preferably disposed at a corner of animaginary rectangle having vertical and horizontal sides, I2 and I3, sothat the gaps II in the two top pairs are dis- CII In Great BritainApril 1, 1938 posed vertically above'the gaps in the two bot- ".5

through the burner 3, and the centre of the' rectangle being preferablycoincident with the axis of the burner 3 and of thev annular ring 4.Each lug I0 is provided with a transverse hole I6 for the reception of awedge I1, one wedge being adapted to pass, preferably horizontally,through the holesv I6 in a pair of lugs.

The burner 3 is passed through the aperture I in the kiln wall 2v untilits outer end 9 seatls itself in the conical seating 8 in the annularring 4. Bars I8 are provided and are disposed in the gaps II between thelugs I0, one bar I8 for two vertically opposite pairs of lugs l0 so thatone end of the bar I8 is in the gap I I between the upper pair of lugsand the other end is in the gap I I between the bottom pair of lugs, andthe medial portion I9 of the bar I8 engages the face of the outer end 20of the burner 3. The wedges I'I are then passed through the holes I6 inthe vlugs Ill so that they engage the outer vertical faces of the holesI6 and the outer faces or edges of the ends of the bars I8. When thewedges I1 are driven tight into contact with the hole faces and thebars, the bars I8 are forced towards the outer face of the annular ring4 and in turn force the conical end 9 of the burner 3 tight into theconical seating 8 in the annular ring 4. 'Ihe burner 3 is thereby heldsecurely in position in the kiln wall 2, and may be easily removed forreplacement by knocking out the wedges I1 and removing the bars I8.

The bars I8 may be provided at their upper ends with T-heads 2I adaptedto rest on the upper edges 22 of the top pairs of lugs I0 so that thebars I8 may be suspended from said lugs II) while the wedges I'l arebeing driven into position.

The medial portion of the outer edges of the .bars I8 may be camberedlongitudinally as at 23 for strengthening purposes, whilst the inneredges of the bars may be suitably shaped so as to closely engage thevface of the outer end 20 of the burner 3.

It will be obvious that the invention may be used for securing anysuitable type of burner or supply fitting which is projectedtransversely through the kiln wall, for example, air supply nozzles,tuyres, or the like.

What I claim and desire to secure by Letters Patent is:

1. In a furnace having an opening in its side wall, a seating memberdisposed in said opening and secured to the wall of the furnace, atubular member supported in said seating member with one end outside ofthe furnace, means for removably securing said tubular member in saidseating member and comprising a plurality of lugs projecting from saidseating member and disposed in vertically alined pairs, the lugs of eachpair being spaced apart and provided with alined transverse openings, apair of bars each having its ends disposed in the spaces between thelugs of two vertically alined pairs of lugs, the intermediate portionsof said bars engaging the end of said tubular member at opposite sidesof its opening, and a Wedge disposed in the alined openings of each pairof lugs and extending transversely of the ends of the bars therebypressing them on the tubular member.

2. In a furnace having an opening in its side Wall, a seating memberdisposed in said opening and secured to the wall of the furnace, atubular member supported in said seating member with one end outside ofthe furnace, means for removably securing said tubular member in saidseating member and comprising a plurality of lugs projecting from saidseating member and disposed in vertically alined pairs, the lugs of eachpair being spaced apart and provided with alined transverse openings, apair of bars each having its ends disposed in the spaces between thelugs of two vertically alined pairs of lugs, the intermediate portionsof said bars engaging the end of said tubular member at opposite sidesor" its opening, and a wedge disposed in the alined openings of eachpair of lugs and extending transversely of the ends of the bars therebypressing them on the tubular member, each of said bars having a head atits upper end for supporting the bar on its upper pair of lugs while thewedges are being set in position or removed from the lugs.

3. In a furnace having an opening in its side wall, an annular ringsecured to the furnace wall and having an annular flange projecting intosaid opening, the internal surface of said flange forming a taperedseat, a tubular member disposed in said opening and having on its outersurface a tapered portion forming a uidtight joint with the tapered seatof said ange, a plurality of lugs projecting from the outer face of saidannular ring and disposed in vertically alined pairs, the lugs of eachpair being spaced apart and provided with alined transverse openings, apair of bars each having its ends disposed in the spaces between thelugs of two vertically alined pairs of lugs, the intermediate portionsof said bars engaging the end of said tubular member at opposite sidesof its opening, and a wedge disposed in the alined openings of each pairof lugs and extending transversely of the ends of the bars therebypressing them on the tubular member, each of said bars having a head atits upper end for supporting the bar on its upper pair of lugs while theWedges are being set in position or removed from the lugs.

CHARLES FREDERICK PRIEST.

